Stk: Handle Null Alpha Identifer for Setup Call

- Per specification 102223 section 6.4.13:
  If the first alpha identifier is not provided by the UICC
  or is a null data object (ie. length is zero and has no
  value part) , the default setup call message is sent.

Change-Id: Ieb5eb25f004907ee68bea152e06b316da3ebfec0
Merge "Stk: Handle Null Alpha Identifer for Setup Call"
Merge remote-tracking branch 'caf/jb_mr2' into caf